code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/Pithos.java

   1 /*
   2  * Copyright 2011 GRNET S.A. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or
   5  * without modification, are permitted provided that the following
   6  * conditions are met:
   7  *
   8  *   1. Redistributions of source code must retain the above
   9  *      copyright notice, this list of conditions and the following
  10  *      disclaimer.
  11  *
  12  *   2. Redistributions in binary form must reproduce the above
  13  *      copyright notice, this list of conditions and the following
  14  *      disclaimer in the documentation and/or other materials
  15  *      provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
  18  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  24  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  25  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  27  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  *
  30  * The views and conclusions contained in the software and
  31  * documentation are those of the authors and should not be
  32  * interpreted as representing official policies, either expressed
  33  * or implied, of GRNET S.A.
  34  */
  35 package gr.grnet.pithos.web.client;
  36
  37 import gr.grnet.pithos.web.client.commands.UploadFileCommand;
  38 import gr.grnet.pithos.web.client.foldertree.AccountResource;
  39 import gr.grnet.pithos.web.client.foldertree.File;
  40 import gr.grnet.pithos.web.client.foldertree.Folder;
  41 import gr.grnet.pithos.web.client.foldertree.FolderTreeView;
  42 import gr.grnet.pithos.web.client.foldertree.FolderTreeViewModel;
  43 import gr.grnet.pithos.web.client.foldertree.Resource;
  44 import gr.grnet.pithos.web.client.grouptree.Group;
  45 import gr.grnet.pithos.web.client.grouptree.GroupTreeView;
  46 import gr.grnet.pithos.web.client.grouptree.GroupTreeViewModel;
  47 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeView;
  48 import gr.grnet.pithos.web.client.mysharedtree.MysharedTreeViewModel;
  49 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeView;
  50 import gr.grnet.pithos.web.client.othersharedtree.OtherSharedTreeViewModel;
  51 import gr.grnet.pithos.web.client.rest.DeleteRequest;
  52 import gr.grnet.pithos.web.client.rest.GetRequest;
  53 import gr.grnet.pithos.web.client.rest.HeadRequest;
  54 import gr.grnet.pithos.web.client.rest.PutRequest;
  55 import gr.grnet.pithos.web.client.rest.RestException;
  56 import gr.grnet.pithos.web.client.tagtree.Tag;
  57 import gr.grnet.pithos.web.client.tagtree.TagTreeView;
  58 import gr.grnet.pithos.web.client.tagtree.TagTreeViewModel;
  59
  60 import java.util.ArrayList;
  61 import java.util.HashMap;
  62 import java.util.Iterator;
  63 import java.util.List;
  64 import java.util.Set;
  65
  66 import com.google.gwt.core.client.EntryPoint;
  67 import com.google.gwt.core.client.GWT;
  68 import com.google.gwt.core.client.Scheduler;
  69 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
  70 import com.google.gwt.event.dom.client.ClickEvent;
  71 import com.google.gwt.event.dom.client.ClickHandler;
  72 import com.google.gwt.event.logical.shared.ResizeEvent;
  73 import com.google.gwt.event.logical.shared.ResizeHandler;
  74 import com.google.gwt.http.client.Request;
  75 import com.google.gwt.http.client.RequestBuilder;
  76 import com.google.gwt.http.client.RequestCallback;
  77 import com.google.gwt.http.client.RequestException;
  78 import com.google.gwt.http.client.Response;
  79 import com.google.gwt.http.client.URL;
  80 import com.google.gwt.i18n.client.NumberFormat;
  81 import com.google.gwt.json.client.JSONArray;
  82 import com.google.gwt.json.client.JSONObject;
  83 import com.google.gwt.json.client.JSONParser;
  84 import com.google.gwt.json.client.JSONString;
  85 import com.google.gwt.json.client.JSONValue;
  86 import com.google.gwt.resources.client.ImageResource;
  87 import com.google.gwt.user.client.Command;
  88 import com.google.gwt.user.client.Cookies;
  89 import com.google.gwt.user.client.Event;
  90 import com.google.gwt.user.client.History;
  91 import com.google.gwt.user.client.Window;
  92 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  93 import com.google.gwt.user.client.ui.Button;
  94 import com.google.gwt.user.client.ui.HTML;
  95 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  96 import com.google.gwt.user.client.ui.HasVerticalAlignment;
  97 import com.google.gwt.user.client.ui.HorizontalPanel;
  98 import com.google.gwt.user.client.ui.HorizontalSplitPanel;
  99 import com.google.gwt.user.client.ui.RootPanel;
 100 import com.google.gwt.user.client.ui.VerticalPanel;
 101 import com.google.gwt.view.client.SelectionChangeEvent;
 102 import com.google.gwt.view.client.SelectionChangeEvent.Handler;
 103 import com.google.gwt.view.client.SingleSelectionModel;
 104
 105 /**
 106  * Entry point classes define <code>onModuleLoad()</code>.
 107  */
 108 public class Pithos implements EntryPoint, ResizeHandler {
 109
 110         public static final String HOME_CONTAINER = "pithos";
 111
 112         public static final String TRASH_CONTAINER = "trash";
 113
 114         /**
 115          * Instantiate an application-level image bundle. This object will provide
 116          * programmatic access to all the images needed by widgets.
 117          */
 118         static Images images = (Images) GWT.create(Images.class);
 119
 120     public String getUsername() {
 121         return username;
 122     }
 123
 124     public void setAccount(AccountResource acct) {
 125         account = acct;
 126     }
 127
 128     public AccountResource getAccount() {
 129         return account;
 130     }
 131
 132     public void updateFolder(Folder f, boolean showfiles, Command callback) {
 133         folderTreeView.updateFolder(f, showfiles, callback);
 134     }
 135
 136     public void updateGroupNode(Group group) {
 137         groupTreeView.updateGroupNode(group);
 138     }
 139
 140     public void updateSharedFolder(Folder f, boolean showfiles) {
 141         mysharedTreeView.updateFolder(f, showfiles);
 142     }
 143
 144     public void updateOtherSharedFolder(Folder f, boolean showfiles) {
 145         otherSharedTreeView.updateFolder(f, showfiles);
 146     }
 147
 148     public List<Tag> getAllTags() {
 149         List<Tag> tagList = new ArrayList<Tag>();
 150         for (Folder f : account.getContainers()) {
 151             for (String t : f.getTags()) {
 152                 tagList.add(new Tag(t));
 153             }
 154         }
 155         return tagList;
 156     }
 157
 158     public MysharedTreeView getMySharedTreeView() {
 159         return mysharedTreeView;
 160     }
 161
 162     /**
 163          * An aggregate image bundle that pulls together all the images for this
 164          * application into a single bundle.
 165          */
 166         public interface Images extends TopPanel.Images, FileList.Images, ToolsMenu.Images {
 167
 168                 @Source("gr/grnet/pithos/resources/document.png")
 169                 ImageResource folders();
 170
 171                 @Source("gr/grnet/pithos/resources/advancedsettings.png")
 172                 ImageResource tools();
 173         }
 174
 175         /**
 176          * The Application Clipboard implementation;
 177          */
 178         private Clipboard clipboard = new Clipboard();
 179
 180         /**
 181          * The top panel that contains the menu bar.
 182          */
 183         private TopPanel topPanel;
 184
 185         /**
 186          * The panel that contains the various system messages.
 187          */
 188         private MessagePanel messagePanel = new MessagePanel(Pithos.images);
 189
 190         /**
 191          * The bottom panel that contains the status bar.
 192          */
 193         private StatusPanel statusPanel = null;
 194
 195         /**
 196          * The file list widget.
 197          */
 198         private FileList fileList;
 199
 200         /**
 201          * The tab panel that occupies the right side of the screen.
 202          */
 203         private VerticalPanel inner = new VerticalPanel();
 204
 205
 206         /**
 207          * The split panel that will contain the left and right panels.
 208          */
 209         private HorizontalSplitPanel splitPanel = new HorizontalSplitPanel();
 210
 211         /**
 212          * The currently selected item in the application, for use by the Edit menu
 213          * commands. Potential types are Folder, File, User and Group.
 214          */
 215         private Object currentSelection;
 216
 217         public HashMap<String, String> userFullNameMap = new HashMap<String, String>();
 218
 219     private String username = null;
 220
 221     /**
 222      * The authentication token of the current user.
 223      */
 224     private String token;
 225
 226     VerticalPanel trees;
 227
 228     SingleSelectionModel<Folder> folderTreeSelectionModel;
 229     FolderTreeViewModel folderTreeViewModel;
 230     FolderTreeView folderTreeView;
 231
 232     SingleSelectionModel<Folder> mysharedTreeSelectionModel;
 233     MysharedTreeViewModel mysharedTreeViewModel;
 234     MysharedTreeView mysharedTreeView = null;;
 235
 236     protected SingleSelectionModel<Folder> otherSharedTreeSelectionModel;
 237     OtherSharedTreeViewModel otherSharedTreeViewModel;
 238     OtherSharedTreeView otherSharedTreeView = null;
 239
 240     GroupTreeViewModel groupTreeViewModel;
 241     private GroupTreeView groupTreeView;
 242
 243     private TreeView selectedTree;
 244     protected AccountResource account;
 245
 246     Folder trash;
 247
 248     @SuppressWarnings("rawtypes") List<SingleSelectionModel> selectionModels = new ArrayList<SingleSelectionModel>();
 249
 250     Button upload;
 251
 252     private HTML totalFiles;
 253
 254     private HTML usedBytes;
 255
 256     private HTML totalBytes;
 257
 258     private HTML usedPercent;
 259
 260     private HTML numOfFiles;
 261
 262     private Button toolsButton;
 263
 264         @Override
 265         public void onModuleLoad() {
 266                 if (parseUserCredentials())
 267             initialize();
 268         }
 269
 270     private void initialize() {
 271         VerticalPanel outer = new VerticalPanel();
 272         outer.setWidth("100%");
 273
 274         topPanel = new TopPanel(this, Pithos.images);
 275         topPanel.setWidth("100%");
 276         outer.add(topPanel);
 277         outer.setCellHorizontalAlignment(topPanel, HasHorizontalAlignment.ALIGN_CENTER);
 278
 279         messagePanel.setWidth("75%");
 280         messagePanel.setVisible(false);
 281         outer.add(messagePanel);
 282         outer.setCellHorizontalAlignment(messagePanel, HasHorizontalAlignment.ALIGN_CENTER);
 283
 284
 285         // Inner contains the various lists.
 286         inner.sinkEvents(Event.ONCONTEXTMENU);
 287         inner.setWidth("100%");
 288
 289         HorizontalPanel rightside = new HorizontalPanel();
 290         rightside.addStyleName("pithos-rightSide");
 291         rightside.setSpacing(5);
 292
 293         toolsButton = new Button(AbstractImagePrototype.create(images.tools()).getHTML());
 294         toolsButton.addClickHandler(new ClickHandler() {
 295
 296                         @Override
 297                         public void onClick(ClickEvent event) {
 298                 ToolsMenu menu = new ToolsMenu(Pithos.this, images, getSelectedTree(), getSelectedTree().getSelection(), getFileList().getSelectedFiles());
 299                 if (!menu.isEmpty()) {
 300                             menu.setPopupPosition(event.getClientX(), event.getClientY());
 301                             menu.show();
 302                 }
 303                         }
 304                 });
 305         rightside.add(toolsButton);
 306         rightside.setCellHorizontalAlignment(toolsButton, HasHorizontalAlignment.ALIGN_LEFT);
 307
 308         HorizontalPanel folderStatistics = new HorizontalPanel();
 309         folderStatistics.addStyleName("pithos-folderStatistics");
 310         numOfFiles = new HTML();
 311         folderStatistics.add(numOfFiles);
 312         HTML numOfFilesLabel = new HTML("&nbsp;Files");
 313         folderStatistics.add(numOfFilesLabel);
 314         rightside.add(folderStatistics);
 315         rightside.setCellHorizontalAlignment(folderStatistics, HasHorizontalAlignment.ALIGN_RIGHT);
 316
 317         inner.add(rightside);
 318         inner.setCellVerticalAlignment(rightside, HasVerticalAlignment.ALIGN_MIDDLE);
 319         inner.setCellHeight(rightside, "60px");
 320
 321         folderTreeSelectionModel = new SingleSelectionModel<Folder>();
 322         folderTreeSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
 323             @Override
 324             public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
 325                 if (folderTreeSelectionModel.getSelectedObject() != null) {
 326                     deselectOthers(folderTreeView, folderTreeSelectionModel);
 327                     applyPermissions(folderTreeSelectionModel.getSelectedObject());
 328                     Folder f = folderTreeSelectionModel.getSelectedObject();
 329                     updateFolder(f, true, null);
 330                 }
 331             }
 332         });
 333         selectionModels.add(folderTreeSelectionModel);
 334
 335         folderTreeViewModel = new FolderTreeViewModel(this, folderTreeSelectionModel);
 336         folderTreeView = new FolderTreeView(folderTreeViewModel);
 337
 338         fileList = new FileList(this, images, folderTreeView);
 339         inner.add(fileList);
 340
 341         groupTreeViewModel = new GroupTreeViewModel(this);
 342         groupTreeView = new GroupTreeView(groupTreeViewModel);
 343
 344         trees = new VerticalPanel();
 345         trees.setWidth("100%");
 346
 347         VerticalPanel uploadButtonPanel = new VerticalPanel();
 348         upload = new Button("Upload File", new ClickHandler() {
 349             @Override
 350             public void onClick(@SuppressWarnings("unused") ClickEvent event) {
 351                 new UploadFileCommand(Pithos.this, null, getSelection()).execute();
 352             }
 353         });
 354         uploadButtonPanel.add(upload);
 355         uploadButtonPanel.setWidth("100%");
 356         uploadButtonPanel.setHeight("60px");
 357         uploadButtonPanel.setCellHorizontalAlignment(upload, HasHorizontalAlignment.ALIGN_CENTER);
 358         uploadButtonPanel.setCellVerticalAlignment(upload, HasVerticalAlignment.ALIGN_MIDDLE);
 359         upload.addStyleName("pithos-uploadButton");
 360         trees.add(uploadButtonPanel);
 361
 362         HorizontalPanel treeHeader = new HorizontalPanel();
 363         treeHeader.addStyleName("pithos-treeHeader");
 364         treeHeader.setWidth("100%");
 365         treeHeader.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_CENTER);
 366         HorizontalPanel statistics = new HorizontalPanel();
 367         statistics.add(new HTML("Total Objects:&nbsp;"));
 368         totalFiles = new HTML();
 369         statistics.add(totalFiles);
 370         statistics.add(new HTML("&nbsp;|&nbsp;Used:&nbsp;"));
 371         usedBytes = new HTML();
 372         statistics.add(usedBytes);
 373         statistics.add(new HTML("&nbsp;of&nbsp;"));
 374         totalBytes = new HTML();
 375         statistics.add(totalBytes);
 376         statistics.add(new HTML("&nbsp;("));
 377         usedPercent = new HTML();
 378         statistics.add(usedPercent);
 379         statistics.add(new HTML(")"));
 380         treeHeader.add(statistics);
 381         treeHeader.setCellHorizontalAlignment(statistics, HasHorizontalAlignment.ALIGN_LEFT);
 382         trees.add(treeHeader);
 383
 384         trees.add(folderTreeView);
 385         trees.add(groupTreeView);
 386         // Add the left and right panels to the split panel.
 387         splitPanel.setLeftWidget(trees);
 388         splitPanel.setRightWidget(inner);
 389         splitPanel.setSplitPosition("35%");
 390         splitPanel.setSize("100%", "100%");
 391         splitPanel.addStyleName("pithos-splitPanel");
 392         splitPanel.setWidth("75%");
 393         outer.add(splitPanel);
 394         outer.setCellHorizontalAlignment(splitPanel, HasHorizontalAlignment.ALIGN_CENTER);
 395
 396         statusPanel = new StatusPanel();
 397         statusPanel.setWidth("100%");
 398         outer.add(statusPanel);
 399         outer.setCellHorizontalAlignment(statusPanel, HasHorizontalAlignment.ALIGN_CENTER);
 400
 401         // Hook the window resize event, so that we can adjust the UI.
 402         Window.addResizeHandler(this);
 403         // Clear out the window's built-in margin, because we want to take
 404         // advantage of the entire client area.
 405         Window.setMargin("0px");
 406         // Finally, add the outer panel to the RootPanel, so that it will be
 407         // displayed.
 408         RootPanel.get().add(outer);
 409         // Call the window resized handler to get the initial sizes setup. Doing
 410         // this in a deferred command causes it to occur after all widgets'
 411         // sizes have been computed by the browser.
 412         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 413
 414             @Override
 415             public void execute() {
 416                 onWindowResized(Window.getClientHeight());
 417             }
 418         });
 419
 420         Scheduler.get().scheduleDeferred(new ScheduledCommand() {
 421             @Override
 422             public void execute() {
 423                 fetchAccount(new Command() {
 424
 425                                         @Override
 426                                         public void execute() {
 427                                 if (!account.hasHomeContainer())
 428                                     createHomeContainer(account, this);
 429                                 else if (!account.hasTrashContainer())
 430                                         createTrashContainer(this);
 431                                 else {
 432                                         for (Folder f : account.getContainers())
 433                                                 if (f.getName().equals(Pithos.TRASH_CONTAINER)) {
 434                                                         trash = f;
 435                                                         break;
 436                                                 }
 437                                     folderTreeViewModel.initialize(account, new Command() {
 438
 439                                                                 @Override
 440                                                                 public void execute() {
 441                                                     createMySharedTree();
 442                                                                 }
 443                                                         });
 444                                     groupTreeViewModel.initialize();
 445                                     showStatistics();
 446                                 }
 447                                         }
 448                                 });
 449             }
 450         });
 451     }
 452
 453     public void applyPermissions(Folder f) {
 454         if (f != null) {
 455                 if (f.isInTrash())
 456                         upload.setEnabled(false);
 457                 else {
 458                         Boolean[] perms = f.getPermissions().get(username);
 459                         if (f.getOwner().equals(username) || (perms != null && perms[1] != null && perms[1])) {
 460                                 upload.setEnabled(true);
 461                         }
 462                         else
 463                                 upload.setEnabled(false);
 464                 }
 465         }
 466         else
 467                 upload.setEnabled(false);
 468         }
 469
 470         @SuppressWarnings({ "rawtypes", "unchecked" })
 471         public void deselectOthers(TreeView _selectedTree, SingleSelectionModel model) {
 472         selectedTree = _selectedTree;
 473         for (SingleSelectionModel s : selectionModels)
 474             if (!s.equals(model))
 475                 s.setSelected(s.getSelectedObject(), false);
 476     }
 477
 478     public void showFiles(Folder f) {
 479         Set<File> files = f.getFiles();
 480         showFiles(files);
 481     }
 482
 483     public void showFiles(Set<File> files) {
 484         //Iterator<File> iter = files.iterator();
 485         //fetchFile(iter, files);
 486         fileList.setFiles(new ArrayList<File>(files));
 487     }
 488
 489     protected void fetchFile(final Iterator<File> iter, final Set<File> files) {
 490         if (iter.hasNext()) {
 491             File file = iter.next();
 492             String path = file.getUri() + "?format=json";
 493             GetRequest<File> getFile = new GetRequest<File>(File.class, getApiPath(), username, path, file) {
 494                 @Override
 495                 public void onSuccess(@SuppressWarnings("unused") File _result) {
 496                     fetchFile(iter, files);
 497                 }
 498
 499                 @Override
 500                 public void onError(Throwable t) {
 501                     GWT.log("Error getting file", t);
 502                     if (t instanceof RestException)
 503                         displayError("Error getting file: " + ((RestException) t).getHttpStatusText());
 504                     else
 505                         displayError("System error fetching file: " + t.getMessage());
 506                 }
 507
 508                                 @Override
 509                                 protected void onUnauthorized(Response response) {
 510                                         sessionExpired();
 511                                 }
 512             };
 513             getFile.setHeader("X-Auth-Token", "0000");
 514             Scheduler.get().scheduleDeferred(getFile);
 515         }
 516         else
 517             fileList.setFiles(new ArrayList<File>(files));
 518     }
 519
 520     /**
 521          * Parse and store the user credentials to the appropriate fields.
 522          */
 523         private boolean parseUserCredentials() {
 524         username = Window.Location.getParameter("user");
 525         token = Window.Location.getParameter("token");
 526         Configuration conf = (Configuration) GWT.create(Configuration.class);
 527         if (username == null || username.length() == 0 || token == null || token.length() == 0) {
 528             String cookie = conf.authCookie();
 529             String auth = Cookies.getCookie(cookie);
 530             if (auth == null) {
 531                 authenticateUser();
 532                 return false;
 533             }
 534                         String[] authSplit = auth.split("\\" + conf.cookieSeparator(), 2);
 535                         if (authSplit.length != 2) {
 536                             authenticateUser();
 537                             return false;
 538                         }
 539                         username = authSplit[0];
 540                         token = authSplit[1];
 541                         return true;
 542         }
 543                 Cookies.setCookie(conf.authCookie(), username + conf.cookieSeparator() + token);
 544                 return true;
 545     }
 546
 547     /**
 548          * Redirect the user to the login page for authentication.
 549          */
 550         protected void authenticateUser() {
 551                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 552         Window.Location.assign(conf.loginUrl() + "?next=" + Window.Location.getHref());
 553         }
 554
 555         protected void fetchAccount(final Command callback) {
 556         String path = "?format=json";
 557
 558         GetRequest<AccountResource> getAccount = new GetRequest<AccountResource>(AccountResource.class, getApiPath(), username, path) {
 559             @Override
 560             public void onSuccess(AccountResource _result) {
 561                 account = _result;
 562                 if (callback != null)
 563                         callback.execute();
 564             }
 565
 566             @Override
 567             public void onError(Throwable t) {
 568                 GWT.log("Error getting account", t);
 569                 if (t instanceof RestException)
 570                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 571                 else
 572                     displayError("System error fetching user data: " + t.getMessage());
 573             }
 574
 575                         @Override
 576                         protected void onUnauthorized(Response response) {
 577                                 sessionExpired();
 578                         }
 579         };
 580         getAccount.setHeader("X-Auth-Token", token);
 581         Scheduler.get().scheduleDeferred(getAccount);
 582     }
 583
 584     public void updateStatistics() {
 585         HeadRequest<AccountResource> headAccount = new HeadRequest<AccountResource>(AccountResource.class, getApiPath(), username, "", account) {
 586
 587                         @Override
 588                         public void onSuccess(@SuppressWarnings("unused") AccountResource _result) {
 589                                 showStatistics();
 590                         }
 591
 592                         @Override
 593                         public void onError(Throwable t) {
 594                 GWT.log("Error getting account", t);
 595                 if (t instanceof RestException)
 596                     displayError("Error getting account: " + ((RestException) t).getHttpStatusText());
 597                 else
 598                     displayError("System error fetching user data: " + t.getMessage());
 599                         }
 600
 601                         @Override
 602                         protected void onUnauthorized(Response response) {
 603                                 sessionExpired();
 604                         }
 605                 };
 606                 headAccount.setHeader("X-Auth-Token", token);
 607                 Scheduler.get().scheduleDeferred(headAccount);
 608         }
 609
 610         protected void showStatistics() {
 611         totalFiles.setHTML(String.valueOf(account.getNumberOfObjects()));
 612         usedBytes.setHTML(String.valueOf(account.getFileSizeAsString()));
 613         totalBytes.setHTML(String.valueOf(account.getQuotaAsString()));
 614         NumberFormat nf = NumberFormat.getPercentFormat();
 615         usedPercent.setHTML(nf.format(account.getUsedPercentage()));
 616         }
 617
 618         protected void createHomeContainer(final AccountResource _account, final Command callback) {
 619         String path = "/" + Pithos.HOME_CONTAINER;
 620         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 621             @Override
 622             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 623                 if (!_account.hasTrashContainer())
 624                         createTrashContainer(callback);
 625                 else
 626                         fetchAccount(callback);
 627             }
 628
 629             @Override
 630             public void onError(Throwable t) {
 631                 GWT.log("Error creating pithos", t);
 632                 if (t instanceof RestException)
 633                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 634                 else
 635                     displayError("System error Error creating pithos: " + t.getMessage());
 636             }
 637
 638                         @Override
 639                         protected void onUnauthorized(Response response) {
 640                                 sessionExpired();
 641                         }
 642         };
 643         createPithos.setHeader("X-Auth-Token", getToken());
 644         Scheduler.get().scheduleDeferred(createPithos);
 645     }
 646
 647     protected void createTrashContainer(final Command callback) {
 648         String path = "/" + Pithos.TRASH_CONTAINER;
 649         PutRequest createPithos = new PutRequest(getApiPath(), getUsername(), path) {
 650             @Override
 651             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 652                         fetchAccount(callback);
 653             }
 654
 655             @Override
 656             public void onError(Throwable t) {
 657                 GWT.log("Error creating pithos", t);
 658                 if (t instanceof RestException)
 659                     displayError("Error creating pithos: " + ((RestException) t).getHttpStatusText());
 660                 else
 661                     displayError("System error Error creating pithos: " + t.getMessage());
 662             }
 663
 664                         @Override
 665                         protected void onUnauthorized(Response response) {
 666                                 sessionExpired();
 667                         }
 668         };
 669         createPithos.setHeader("X-Auth-Token", getToken());
 670         Scheduler.get().scheduleDeferred(createPithos);
 671     }
 672
 673     /**
 674          * Creates an HTML fragment that places an image & caption together, for use
 675          * in a group header.
 676          *
 677          * @param imageProto an image prototype for an image
 678          * @param caption the group caption
 679          * @return the header HTML fragment
 680          */
 681         private String createHeaderHTML(AbstractImagePrototype imageProto, String caption) {
 682                 String captionHTML = "<table class='caption' cellpadding='0' "
 683                 + "cellspacing='0'>" + "<tr><td class='lcaption'>" + imageProto.getHTML()
 684                 + "</td><td id =" + caption +" class='rcaption'><b style='white-space:nowrap'>&nbsp;"
 685                 + caption + "</b></td></tr></table>";
 686                 return captionHTML;
 687         }
 688
 689         protected void onWindowResized(int height) {
 690                 // Adjust the split panel to take up the available room in the window.
 691                 int newHeight = height - splitPanel.getAbsoluteTop() - 60;
 692                 if (newHeight < 1)
 693                         newHeight = 1;
 694                 splitPanel.setHeight("" + newHeight);
 695                 inner.setHeight("" + newHeight);
 696         }
 697
 698         @Override
 699         public void onResize(ResizeEvent event) {
 700                 int height = event.getHeight();
 701                 onWindowResized(height);
 702         }
 703
 704         /**
 705          * Display an error message.
 706          *
 707          * @param msg the message to display
 708          */
 709         public void displayError(String msg) {
 710                 messagePanel.displayError(msg);
 711         }
 712
 713         /**
 714          * Display a warning message.
 715          *
 716          * @param msg the message to display
 717          */
 718         public void displayWarning(String msg) {
 719                 messagePanel.displayWarning(msg);
 720         }
 721
 722         /**
 723          * Display an informational message.
 724          *
 725          * @param msg the message to display
 726          */
 727         public void displayInformation(String msg) {
 728                 messagePanel.displayInformation(msg);
 729         }
 730
 731         /**
 732          * Retrieve the fileList.
 733          *
 734          * @return the fileList
 735          */
 736         public FileList getFileList() {
 737                 return fileList;
 738         }
 739
 740         /**
 741          * Retrieve the topPanel.
 742          *
 743          * @return the topPanel
 744          */
 745         TopPanel getTopPanel() {
 746                 return topPanel;
 747         }
 748
 749         /**
 750          * Retrieve the clipboard.
 751          *
 752          * @return the clipboard
 753          */
 754         public Clipboard getClipboard() {
 755                 return clipboard;
 756         }
 757
 758         public StatusPanel getStatusPanel() {
 759                 return statusPanel;
 760         }
 761
 762         public String getToken() {
 763                 return token;
 764         }
 765
 766         public static native void preventIESelection() /*-{
 767                 $doc.body.onselectstart = function () { return false; };
 768         }-*/;
 769
 770         public static native void enableIESelection() /*-{
 771                 if ($doc.body.onselectstart != null)
 772                 $doc.body.onselectstart = null;
 773         }-*/;
 774
 775         /**
 776          * @return the absolute path of the API root URL
 777          */
 778         public String getApiPath() {
 779                 Configuration conf = (Configuration) GWT.create(Configuration.class);
 780                 return conf.apiPath();
 781         }
 782
 783         /**
 784          * History support for folder navigation
 785          * adds a new browser history entry
 786          *
 787          * @param key
 788          */
 789         public void updateHistory(String key){
 790 //              Replace any whitespace of the initial string to "+"
 791 //              String result = key.replaceAll("\\s","+");
 792 //              Add a new browser history entry.
 793 //              History.newItem(result);
 794                 History.newItem(key);
 795         }
 796
 797     public void deleteFolder(final Folder folder) {
 798         String path = getApiPath() + folder.getOwner() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(folder.getPrefix()) + "&t=" + System.currentTimeMillis();
 799         RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 800         builder.setHeader("X-Auth-Token", getToken());
 801         try {
 802             builder.sendRequest("", new RequestCallback() {
 803                 @Override
 804                 public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 805                     if (response.getStatusCode() == Response.SC_OK) {
 806                         JSONValue json = JSONParser.parseStrict(response.getText());
 807                         JSONArray array = json.isArray();
 808                         int i = 0;
 809                         if (array != null) {
 810                             deleteObject(folder, i, array);
 811                         }
 812                     }
 813                 }
 814
 815                 @Override
 816                 public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 817                     displayError("System error unable to delete folder: " + exception.getMessage());
 818                 }
 819             });
 820         }
 821         catch (RequestException e) {
 822         }
 823     }
 824
 825     void deleteObject(final Folder folder, final int i, final JSONArray array) {
 826         if (i < array.size()) {
 827             JSONObject o = array.get(i).isObject();
 828             if (o != null && !o.containsKey("subdir")) {
 829                 JSONString name = o.get("name").isString();
 830                 String path = "/" + folder.getContainer() + "/" + name.stringValue();
 831                 DeleteRequest delete = new DeleteRequest(getApiPath(), folder.getOwner(), path) {
 832                     @Override
 833                     public void onSuccess(@SuppressWarnings("unused") Resource result) {
 834                         deleteObject(folder, i + 1, array);
 835                     }
 836
 837                     @Override
 838                     public void onError(Throwable t) {
 839                         GWT.log("", t);
 840                         displayError("System error unable to delete folder: " + t.getMessage());
 841                     }
 842
 843                                 @Override
 844                                 protected void onUnauthorized(Response response) {
 845                                         sessionExpired();
 846                                 }
 847                 };
 848                 delete.setHeader("X-Auth-Token", getToken());
 849                 Scheduler.get().scheduleDeferred(delete);
 850             }
 851             else if (o != null) {
 852                 String subdir = o.get("subdir").isString().stringValue();
 853                 subdir = subdir.substring(0, subdir.length() - 1);
 854                 String path = getApiPath() + getUsername() + "/" + folder.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(subdir) + "&t=" + System.currentTimeMillis();
 855                 RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, path);
 856                 builder.setHeader("X-Auth-Token", getToken());
 857                 try {
 858                     builder.sendRequest("", new RequestCallback() {
 859                         @Override
 860                         public void onResponseReceived(@SuppressWarnings("unused") Request request, Response response) {
 861                             if (response.getStatusCode() == Response.SC_OK) {
 862                                 JSONValue json = JSONParser.parseStrict(response.getText());
 863                                 JSONArray array2 = json.isArray();
 864                                 if (array2 != null) {
 865                                     int l = array.size();
 866                                     for (int j=0; j<array2.size(); j++) {
 867                                         array.set(l++, array2.get(j));
 868                                     }
 869                                 }
 870                                 deleteObject(folder, i + 1, array);
 871                             }
 872                         }
 873
 874                         @Override
 875                         public void onError(@SuppressWarnings("unused") Request request, Throwable exception) {
 876                             displayError("System error unable to delete folder: " + exception.getMessage());
 877                         }
 878                     });
 879                 }
 880                 catch (RequestException e) {
 881                 }
 882             }
 883         }
 884         else {
 885             String path = folder.getUri();
 886             DeleteRequest deleteFolder = new DeleteRequest(getApiPath(), getUsername(), path) {
 887                 @Override
 888                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 889 //                      folderTreeSelectionModel.setSelected(folder.getParent(), true);
 890                     updateFolder(folder.getParent(), true, new Command() {
 891
 892                                                 @Override
 893                                                 public void execute() {
 894                                                         updateStatistics();
 895                                                 }
 896                                         });
 897                 }
 898
 899                 @Override
 900                 public void onError(Throwable t) {
 901                     GWT.log("", t);
 902                     if (t instanceof RestException) {
 903                         if (((RestException) t).getHttpStatusCode() != Response.SC_NOT_FOUND)
 904                                 displayError("Unable to delete folder: "+((RestException) t).getHttpStatusText());
 905                         else
 906                                 onSuccess(null);
 907                     }
 908                     else
 909                         displayError("System error unable to delete folder: " + t.getMessage());
 910                 }
 911
 912                                 @Override
 913                                 protected void onUnauthorized(Response response) {
 914                                         sessionExpired();
 915                                 }
 916             };
 917             deleteFolder.setHeader("X-Auth-Token", getToken());
 918             Scheduler.get().scheduleDeferred(deleteFolder);
 919         }
 920     }
 921
 922     public FolderTreeView getFolderTreeView() {
 923         return folderTreeView;
 924     }
 925
 926     public void copyFiles(final Iterator<File> iter, final String targetUsername, final String targetUri, final Command callback) {
 927         if (iter.hasNext()) {
 928             File file = iter.next();
 929             String path = targetUri + "/" + file.getName();
 930             PutRequest copyFile = new PutRequest(getApiPath(), targetUsername, path) {
 931                 @Override
 932                 public void onSuccess(@SuppressWarnings("unused") Resource result) {
 933                     copyFiles(iter, targetUsername, targetUri, callback);
 934                 }
 935
 936                 @Override
 937                 public void onError(Throwable t) {
 938                     GWT.log("", t);
 939                     if (t instanceof RestException) {
 940                         displayError("Unable to copy file: " + ((RestException) t).getHttpStatusText());
 941                     }
 942                     else
 943                         displayError("System error unable to copy file: "+t.getMessage());
 944                 }
 945
 946                                 @Override
 947                                 protected void onUnauthorized(Response response) {
 948                                         sessionExpired();
 949                                 }
 950             };
 951             copyFile.setHeader("X-Auth-Token", getToken());
 952             copyFile.setHeader("X-Copy-From", file.getUri());
 953             if (!file.getOwner().equals(targetUsername))
 954                 copyFile.setHeader("X-Source-Account", file.getOwner());
 955             Scheduler.get().scheduleDeferred(copyFile);
 956         }
 957         else  if (callback != null) {
 958             callback.execute();
 959         }
 960     }
 961
 962     public void copySubfolders(final Iterator<Folder> iter, final String targetUsername, final String targetUri, final Command callback) {
 963         if (iter.hasNext()) {
 964             final Folder f = iter.next();
 965             copyFolder(f, targetUsername, targetUri, new Command() {
 966
 967                                 @Override
 968                                 public void execute() {
 969                                         copySubfolders(iter, targetUsername, targetUri, callback);
 970                                 }
 971                         });
 972         }
 973         else  if (callback != null) {
 974             callback.execute();
 975         }
 976     }
 977
 978     public void copyFolder(final Folder f, final String targetUsername, final String targetUri, final Command callback) {
 979         String path = targetUri + "/" + f.getName();
 980         PutRequest createFolder = new PutRequest(getApiPath(), targetUsername, path) {
 981             @Override
 982             public void onSuccess(@SuppressWarnings("unused") Resource result) {
 983                 GetRequest<Folder> getFolder = new GetRequest<Folder>(Folder.class, getApiPath(), f.getOwner(), "/" + f.getContainer() + "?format=json&delimiter=/&prefix=" + URL.encodeQueryString(f.getPrefix()), f) {
 984
 985                                         @Override
 986                                         public void onSuccess(final Folder _f) {
 987                                 Iterator<File> iter = _f.getFiles().iterator();
 988                                 copyFiles(iter, targetUsername, targetUri + "/" + _f.getName(), new Command() {
 989                                     @Override
 990                                     public void execute() {
 991                                         Iterator<Folder> iterf = _f.getSubfolders().iterator();
 992                                         copySubfolders(iterf, targetUsername, targetUri + "/" + _f.getName(), callback);
 993                                     }
 994                                 });
 995                                         }
 996
 997                                         @Override
 998                                         public void onError(Throwable t) {
 999                                 GWT.log("", t);
1000                                 if (t instanceof RestException) {
1001                                     displayError("Unable to get folder: " + ((RestException) t).getHttpStatusText());
1002                                 }
1003                                 else
1004                                     displayError("System error getting folder: " + t.getMessage());
1005                                         }
1006
1007                                         @Override
1008                                         protected void onUnauthorized(Response response) {
1009                                                 sessionExpired();
1010                                         }
1011                                 };
1012                                 getFolder.setHeader("X-Auth-Token", getToken());
1013                                 Scheduler.get().scheduleDeferred(getFolder);
1014             }
1015
1016             @Override
1017             public void onError(Throwable t) {
1018                 GWT.log("", t);
1019                 if (t instanceof RestException) {
1020                     displayError("Unable to create folder: " + ((RestException) t).getHttpStatusText());
1021                 }
1022                 else
1023                     displayError("System error creating folder: " + t.getMessage());
1024             }
1025
1026                         @Override
1027                         protected void onUnauthorized(Response response) {
1028                                 sessionExpired();
1029                         }
1030         };
1031         createFolder.setHeader("X-Auth-Token", getToken());
1032         createFolder.setHeader("Accept", "*/*");
1033         createFolder.setHeader("Content-Length", "0");
1034         createFolder.setHeader("Content-Type", "application/folder");
1035         Scheduler.get().scheduleDeferred(createFolder);
1036     }
1037
1038     public void addSelectionModel(@SuppressWarnings("rawtypes") SingleSelectionModel model) {
1039         selectionModels.add(model);
1040     }
1041
1042         public OtherSharedTreeView getOtherSharedTreeView() {
1043                 return otherSharedTreeView;
1044         }
1045
1046         public void updateTrash(boolean showFiles, Command callback) {
1047                 updateFolder(trash, showFiles, callback);
1048         }
1049
1050         public void updateGroupsNode() {
1051                 groupTreeView.updateGroupNode(null);
1052         }
1053
1054         public void addGroup(String groupname) {
1055                 Group newGroup = new Group(groupname);
1056                 account.addGroup(newGroup);
1057                 groupTreeView.updateGroupNode(null);
1058         }
1059
1060         public void removeGroup(Group group) {
1061                 account.removeGroup(group);
1062                 updateGroupsNode();
1063         }
1064
1065         public TreeView getSelectedTree() {
1066                 return selectedTree;
1067         }
1068
1069         public Folder getSelection() {
1070                 return selectedTree.getSelection();
1071         }
1072
1073         public void showFolderStatistics(int folderFileCount) {
1074                 numOfFiles.setHTML(String.valueOf(folderFileCount));
1075         }
1076
1077         public GroupTreeView getGroupTreeView() {
1078                 return groupTreeView;
1079         }
1080
1081         public void sessionExpired() {
1082                 new SessionExpiredDialog(this).center();
1083         }
1084
1085         public void updateRootFolder(Command callback) {
1086                 updateFolder(account.getPithos(), false, callback);
1087         }
1088
1089         void createMySharedTree() {
1090                 mysharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1091                 mysharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1092                     @Override
1093                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1094                         if (mysharedTreeSelectionModel.getSelectedObject() != null) {
1095                             deselectOthers(mysharedTreeView, mysharedTreeSelectionModel);
1096                             upload.setEnabled(false);
1097                             updateSharedFolder(mysharedTreeSelectionModel.getSelectedObject(), true);
1098                         }
1099                     }
1100                 });
1101                 selectionModels.add(mysharedTreeSelectionModel);
1102                 mysharedTreeViewModel = new MysharedTreeViewModel(Pithos.this, mysharedTreeSelectionModel);
1103                 mysharedTreeViewModel.initialize(new Command() {
1104
1105                         @Override
1106                         public void execute() {
1107                             mysharedTreeView = new MysharedTreeView(mysharedTreeViewModel);
1108                                 trees.insert(mysharedTreeView, 3);
1109                                 createOtherSharedTree();
1110                         }
1111                 });
1112         }
1113
1114         void createOtherSharedTree() {
1115                 otherSharedTreeSelectionModel = new SingleSelectionModel<Folder>();
1116                 otherSharedTreeSelectionModel.addSelectionChangeHandler(new Handler() {
1117                     @Override
1118                     public void onSelectionChange(@SuppressWarnings("unused") SelectionChangeEvent event) {
1119                         if (otherSharedTreeSelectionModel.getSelectedObject() != null) {
1120                             deselectOthers(otherSharedTreeView, otherSharedTreeSelectionModel);
1121                             applyPermissions(otherSharedTreeSelectionModel.getSelectedObject());
1122                             updateOtherSharedFolder(otherSharedTreeSelectionModel.getSelectedObject(), true);
1123                         }
1124                     }
1125                 });
1126                 selectionModels.add(otherSharedTreeSelectionModel);
1127                 otherSharedTreeViewModel = new OtherSharedTreeViewModel(Pithos.this, otherSharedTreeSelectionModel);
1128                 otherSharedTreeViewModel.initialize(new Command() {
1129
1130                         @Override
1131                         public void execute() {
1132                             otherSharedTreeView = new OtherSharedTreeView(otherSharedTreeViewModel);
1133                                 trees.insert(otherSharedTreeView, 4);
1134                         }
1135                 });
1136         }
1137
1138         public void logoff() {
1139         Configuration conf = (Configuration) GWT.create(Configuration.class);
1140                 Cookies.removeCookie(conf.authCookie());
1141                 Cookies.removeCookie(conf.authTokenCookie(), "/");
1142                 for (String s: Cookies.getCookieNames())
1143                         if (s.startsWith(conf.shibSessionCookiePrefix()))
1144                                 Cookies.removeCookie(s, "/");
1145                 Window.Location.assign(Window.Location.getPath());
1146         }
1147 }